It's a little annoying that the library forces me to use enгms in string props.

I think better way is change them to Union string type. Example

type  Theme =  "dark" | "light" | "auto"

This way is more preferred in the community, for example it is advised by Matt Pocock.

Also current way not only force pushing using enum in such context, but force push enum code style. Library's enums styled like UperCamelCase in name and SCREAMING_CASE for keys. It's not suitable for every project. Even Typescript Documentation use UperCamelCase for name and case